Home / 13,743.90-18,966.58-7,775.44

Finding the Fourth Proportional to 13,743.90, 18,966.58 and 7,775.44

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Solution

The fourth proportional to 13,743.90, 18,966.58 and 7,775.44 is: 10,730.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.90 : 18,966.58 = 7,775.44 : x
  2. Step 2: Convert to fraction form
    13,743.90/18,966.58 = 7,775.44/x
  3. Step 3: Cross multiply
    13,743.90x = 18,966.58 × 7,775.44
  4. Step 4: Simplify right side
    13,743.90x = 147,473,504.80
  5. Step 5: Solve for x
    x = 147,473,504.80/13,743.90
  6. Step 6: Final answer
    x = 10,730.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.